@media screen and (max-width: 48rem) {
  body {
    min-width: 18.75rem;
    min-height: 31vh;
  }
  .moNavBtnHide {
    display: none;
  }
  header {
    width: 100%;
    box-sizing: border-box;
  }
  header nav {
    box-sizing: border-box;
    width: 100%;
  }
  header .nav_box {
    width: 100%;
    box-sizing: border-box;
  }
  main {
    width: 100%;
    display: block;
    min-height: 22vh;
    box-sizing: border-box;
  }
  footer {
    width: 100%;
    box-sizing: border-box;
  }
  .sub {
    width: 90%;
    height: auto;
    margin: 0 auto;
    background-color: #fff;
    margin-top: 2.5rem;
  }
  .sub h2 {
    width: 9.6875rem;
    height: 1rem;
    font-family: SourceHanSansCN;
    font-weight: bold;
    font-size: 1rem;
    color: #333333;
    line-height: 1rem;
    margin-bottom: 0.9375rem;
  }
  .sub p {
    height: 0.875rem;
    font-family: SourceHanSansSC;
    font-weight: 400;
    font-size: 0.75rem;
    color: #666666;
  }
  .sub .form_box {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: column wrap;
    margin-bottom: 1.25rem;
  }
  .sub .form_box h4 {
    font-family: SourceHanSansSC;
    font-weight: 400;
    font-size: 1.125rem;
    color: #333333;
    margin-bottom: 0.875rem;
    display: none;
  }
  .sub .form_box .imput_box {
    margin-top: 2.6875rem;
  }
  .sub .form_box .imput_box h4::after {
    content: "*";
    display: block;
    color: #F00000;
  }
  .sub .form_box .imput_box input {
    box-sizing: border-box;
    width: 100%;
    height: 3.125rem;
    border: 0.0625rem solid #E5E5E5;
    padding-left: 1.25rem;
  }
  .sub .form_box .imput_box_grow {
    width: 100%;
    flex-grow: 1;
  }
  .sub .form_box .imput_boxs {
    flex-grow: 1;
  }
  .sub .form_box .textarea_box {
    flex-grow: 1;
  }
  .sub .form_box .textarea_box .textarea_input {
    box-sizing: border-box;
    width: 100%;
    height: 10.6875rem;
    border: 0.0625rem solid #E5E5E5;
    padding: 0.625rem;
  }
  .sub .form_box .imput_box_file {
    width: 100%;
    height: 2.125rem;
    flex-grow: 1;
    margin-top: 2.6875rem;
    display: flex;
  }
  .sub .form_box .imput_box_file h4 {
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  .sub .form_box .imput_box_file .file_input_box {
    width: 7.1875rem;
    height: 2.125rem;
    background: #E5E5E5;
    border: 0.0625rem solid #E5E5E5;
    position: relative;
  }
  .sub .form_box .imput_box_file .file_input_box .file_input {
    width: 7.1875rem;
    height: 2.125rem;
    background: #E5E5E5;
    border: 0.0625rem solid #E5E5E5;
    position: absolute;
    top: 0;
    left: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: SourceHanSansSC;
    font-weight: 400;
    font-size: 1.125rem;
    color: #333333;
  }
  .sub .form_box .imput_box_file .file_input_box input {
    width: 100%;
    height: 100%;
    opacity: 0;
    position: absolute;
    top: 0;
    left: 0;
  }
  .sub .form_box .imput_box_file .file_box {
    display: flex;
    justify-content: center;
    align-items: center;
    padding-left: 1.25rem;
  }
  .sub .form_box .imput_box_file .none_file {
    font-family: SourceHanSansSC;
    font-weight: 400;
    font-size: 1rem;
    color: #999999;
    line-height: 1.3125rem;
  }
  .sub .form_box .submit_box {
    width: 100%;
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 3.4375rem;
    margin-bottom: 3.4375rem;
  }
  .sub .form_box .submit_box input {
    width: 28.9375rem;
    height: 3.125rem;
    background: #009FE7;
    border: none;
    font-family: SourceHanSansSC;
    font-weight: 400;
    font-size: 1rem;
    color: #FFFFFF;
    line-height: 1.3125rem;
  }
  .sub .form_box .submit_box input:last-child {
    background: #666666;
    margin-left: 2.375rem;
  }
}
@media screen and (min-width: 48.0625rem) {
  body {
    min-width: 75.0625rem;
  }
  main {
    width: 100%;
    height: 100%;
    min-height: 21vh;
  }
  .sub {
    width: 62.6%;
    height: auto;
    margin: 0 auto;
    background-color: #fff;
    margin-top: 2.5rem;
    padding-bottom: 5rem;
  }
  .sub h2 {
    width: 9.6875rem;
    height: 1.5rem;
    font-family: SourceHanSansCN;
    font-weight: bold;
    font-size: 1.5rem;
    color: #333333;
    line-height: 1.8125rem;
    margin-bottom: 1.875rem;
  }
  .sub p {
    height: 1.25rem;
    font-family: SourceHanSansSC;
    font-weight: 400;
    font-size: 1rem;
    color: #666666;
  }
  .sub .form_box {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 2.5rem;
  }
  .sub .form_box h4 {
    font-family: SourceHanSansSC;
    font-weight: 400;
    font-size: 1.125rem;
    color: #333333;
    margin-bottom: 0.875rem;
    display: flex;
  }
  .sub .form_box .imput_box {
    margin-top: 2.6875rem;
    width: 40%;
  }
  .sub .form_box .imput_box h4::after {
    content: "*";
    display: block;
    color: #F00000;
  }
  .sub .form_box .imput_box input {
    box-sizing: border-box;
    width: 35.8125rem;
    height: 3.375rem;
    border: 0.0625rem solid #E5E5E5;
    padding-left: 1.25rem;
  }
  .sub .form_box .textarea_box {
    width: 100%;
  }
  .sub .form_box .textarea_box h4::after {
    content: "";
  }
  .sub .form_box .textarea_box .textarea_input {
    box-sizing: border-box;
    width: 100%;
    height: 10.6875rem;
    border: 0.0625rem solid #E5E5E5;
    padding: 0.625rem;
  }
  .sub .form_box .imput_box_file {
    width: 100%;
    height: 2.125rem;
    flex-grow: 1;
    margin-top: 2.6875rem;
    display: flex;
  }
  .sub .form_box .imput_box_file h4 {
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  .sub .form_box .imput_box_file .file_input_box {
    width: 7.1875rem;
    height: 2.125rem;
    background: #E5E5E5;
    border: 0.0625rem solid #E5E5E5;
    position: relative;
  }
  .sub .form_box .imput_box_file .file_input_box .file_input {
    width: 7.1875rem;
    height: 2.125rem;
    background: #E5E5E5;
    border: 0.0625rem solid #E5E5E5;
    position: absolute;
    top: 0;
    left: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: SourceHanSansSC;
    font-weight: 400;
    font-size: 1.125rem;
    color: #333333;
  }
  .sub .form_box .imput_box_file .file_input_box input {
    width: 100%;
    height: 100%;
    opacity: 0;
    position: absolute;
    top: 0;
    left: 0;
  }
  .sub .form_box .imput_box_file .file_box {
    display: flex;
    justify-content: center;
    align-items: center;
    padding-left: 1.25rem;
  }
  .sub .form_box .imput_box_file .none_file {
    font-family: SourceHanSansSC;
    font-weight: 400;
    font-size: 1rem;
    color: #999999;
    line-height: 1.3125rem;
  }
  .sub .form_box .submit_box {
    width: 100%;
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 3.4375rem;
    margin-bottom: 3.4375rem;
  }
  .sub .form_box .submit_box input {
    width: 28.9375rem;
    height: 3.125rem;
    background: #009FE7;
    border: none;
    font-family: SourceHanSansSC;
    font-weight: 400;
    font-size: 1rem;
    color: #FFFFFF;
    line-height: 1.3125rem;
  }
  .sub .form_box .submit_box input:last-child {
    background: #666666;
    margin-left: 2.375rem;
  }
}